How To Fix WF012 - Process type is locked by another agent/session

SAP Error Message - Details

• Message type: E = Error

• Message class: WF - Workflow: messages

• Message number: 012

• Message text: Process type is locked by another agent/session

What causes this issue?

The process is locked by another user or another session of your own.
When the process definition is being edited, a process requiring this
definition cannot be executed.
Process type X can also not be changed while a process of type X is
running.

System Response

The action cannot currently be carried out and was rejected.

How to fix this error?

Please repeat the action later or inform the user &V1& who has locked
the process.

Error message extract from SAP system. Copyright SAP SE.